1 - 20 of 31 Works in Percy Jackson Goes to Hogwarts
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Crossroads by TheOneStoryteller
Fandoms: Percy Jackson and the Olympians & Related Fandoms - All Media Types, Harry Potter - J. K. Rowling
14 Dec 2025
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Summary
The war is over, and the quiet life is a welcome change for Percy and Annabeth. However, fate has a way of throwing a wrench in their plans- this time through an owl that delivers the letter with a plea of help in a magical war. Crash-landing in a strange world amidst a terrorist attack, they must navigate a hidden world of magic they don't understand to protect a 14-year-old Harry Potter—a boy who, according to their sole piece of intelligence, is already dead.
Their mission is a paradox, their only intel is a lie, and they are utterly alone. They must unravel the mystery of their summons before a ruthlessly efficient Lord Voldemort can begin a secret, parallel war with a divine power that could unmake reality itself.
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Evening the Odds by BagofDepravity
Fandoms: Percy Jackson and the Olympians - Rick Riordan, Harry Potter - J. K. Rowling
11 Dec 2025
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Hecate decides that the fight between her favorite legacies is too unfair. How is a teenager supposed to contend with the most dangerous dark wizard in the world, who has a decades-long head start? Her solution is to call in a somewhat different, slightly more jaded Percy Jackson as Harry's new bodyguard, to help level the playing field.
Hogwarts' fairer half are more than grateful to have a new demigod hunk on the premises.
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Of old blood by NickArian
Fandoms: Percy Jackson and the Olympians & Related Fandoms - All Media Types, The Heroes of Olympus - Rick Riordan, Percy Jackson and the Olympians - Rick Riordan, Harry Potter - J. K. Rowling
09 Dec 2025
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It has been many, many years since the Greco-Roman divine world last interacted with the magical world. And even before that, the wizardkind had been forgetting the origins of their magic, back in the ancient world. They don't believe anymore. They don't remember.
But it was bond to change when the gods set their eyes on it again. Where this will lead has not yet been completely decided. It depends on what they find there. And so they sent three of their children.
The wizarding world will not understand what has hit them until it is too late.
OR
Hogwarts got a offer of 'good press' by a mysterious family when they need it the most. It was too good to refuse. But what they were truly interested in? And why only now?
Series
- Part 1 of Blood and Magic
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A Little More Than Ichor by Waffle_Head
Fandoms: Percy Jackson and the Olympians - Rick Riordan, Harry Potter - J. K. Rowling
09 Nov 2025
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“Percy hadn’t even been on the Hogwarts Express for ten minutes before he’d already managed to make a fool of himself.
Figures.”
What if Percy had more than Ichor running through his veins?
Basically just a Percy goes to hogwarts cliché
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Specter's Hollow by fireworks_underwater
Fandoms: Harry Potter - J. K. Rowling, Percy Jackson and the Olympians - Rick Riordan
31 Aug 2025
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The Mist is failing. The worlds of the magical and mythical are collapsing, and soon they’re doomed to collide.
Or: Percy Jackson finds himself at Hogwarts.
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Percy Jackson the Half-Blood Prince by Lexi_T_Rexi
Fandoms: Percy Jackson and the Olympians - Rick Riordan, Percy Jackson and the Olympians & Related Fandoms - All Media Types, Harry Potter - J. K. Rowling
25 Jul 2025
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After the Giant War, Percy Jackson just wants a normal life-going on dates with Annabeth, avoiding deadly monsters... you know, typical teenage things. But when a picnic date takes a disastrous turn, Percy discovers he has yet another evil grandfather. So much for normal.
Join Percy Jackson and Harry Potter in a retelling of the Half-blood prince and learn what happens when two worlds combine!
***Updates every OTHER Saturday (if I remember)***
****currently on hiatus****Series
- Part 1 of Percy Jackson: Voldemort's Vessel
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Against All Odds by middlejourney
Fandoms: Percy Jackson and the Olympians & Related Fandoms - All Media Types, Harry Potter - J. K. Rowling
22 Jun 2025
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Percy didn't listen carefully to Chiron's warnings about the gods' symbols of power. After handling two divine symbols on the Summer Solstice he finds himself in a new situation. Now having to tame these new powers at Hogwarts, Percy really needs to break his expulsion streak. If only there wasn't a pesky prophecy stacking the odds against him.
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Demigod in Cover (Book 1) by orphan_account
Fandoms: Percy Jackson and the Olympians & Related Fandoms - All Media Types, Percy Jackson and the Olympians - Rick Riordan, Harry Potter - J. K. Rowling
05 Jun 2025
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Sally Jackson had a secret. A secret that nobody knew, with the exception of one peculiar sea God and one magic Goddess, until the day Percy Jackson received a letter sent by an owl.
How would Percy cope with wizarding life while dealing with the chaos in the mythology world?
Percy Jackson x Harry Potter (and maybe a bit of Merlin element?) crossover
NO lemons
NO sex
Original pairings
No jerk Harry
Minor Cursing
OP Percy JacksonThis story focuses on the wizarding world so all the adventures in the mythology world will be canon and only be mentioned, but not shown.
Series
- Part 1 of Demigod in Cover
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Salvadores em Hogwarts by sofiisc
Fandoms: Harry Potter - J. K. Rowling, The Heroes of Olympus - Rick Riordan, Percy Jackson and the Olympians - Rick Riordan
30 Mar 2025
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Depois da guerra contra Gaia, todos só querem um pouco de paz, mas obviamente isso não iria acontecer. Não vivendo no mundo de Percy Jackson.
Quiron chama Jason, Piper, Nico e Percy para a Casa Grande e os convida para uma nova missão, diferente de todas as que eles já fizeram. Eles teriam que proteger Harry Potter e o mundo mágico de Hécate, que está em conflito com Voldemort.
Depois da morte de Annabeth, Percy nunca mais foi o mesmo. Será que ele voltará a ser o antigo Percy em Hogwarts?
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Slytherin's Son of Poseidon - year 1 by ANNA4EVER
Fandoms: Harry Potter - J. K. Rowling, Percy Jackson and the Olympians - Rick Riordan
08 Mar 2025
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Not everyone is born with a soulmate. But Harry Potter was.
So when a pale boy speaks to him in Madam Malkin's, and a burning sensation flares at his neck, he is caught off guard.
And what, exactly, is a demigod?
Series
- Part 1 of Slytherin's Son of Poseidon
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The blood of the wizard┊HP/HoO crossover by freakinavi
Fandoms: Harry Potter - J. K. Rowling, Percy Jackson and the Olympians - Rick Riordan, Percy Jackson and the Olympians & Related Fandoms - All Media Types
13 Feb 2025
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For demigods, mortals.
For wizards, Muggles.They lived their lives unaware of each other, but something had to happen for them to meet, didn't it? Otherwise, you wouldn't be here.
Voldemort is alive and wants to take over the magical world and eliminate the Muggles, but in doing so, his plans might be thwarted by a group of people who could defeat him. The Dark Lord is aware of this thanks to an informant. Therefore, now the demigods are on his list of conquests... or are they?
The demigods must travel to Hogwarts, infiltrate it, and do everything possible to protect Harry Potter from the disastrous events He-Who-Must-Not-Be-Named is planning, all while trying to survive monsters and keep their identities a secret.
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Percy competes in Triwizard Tournament by thosethreefates
Fandoms: Percy Jackson and the Olympians & Related Fandoms - All Media Types, Harry Potter - J. K. Rowling
01 Feb 2025
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I HAVE BEEN WANTING SOMEONE TO WRITE THIS FOR A YEAR! so I am finally going to do it (but im not a writer so excuse that...) ALSO I only have a vague plan so...
This takes place when Percy has amnesia at the start of SoN but instead of making his way to Camp Jupiter a portal appears and he lands in Hogwarts. (not very creative ik but bear with me)
Love you all and hope you have fun x
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ruins by bblueinthedark
Fandoms: Harry Potter - J. K. Rowling, Percy Jackson and the Olympians - Rick Riordan, Percy Jackson and the Olympians & Related Fandoms - All Media Types, The Heroes of Olympus - Rick Riordan
17 May 2024
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He was born of a violation of an oath. The Goddess of Marriage would likely be proud to see him still alive today... or perhaps pity him for believing that his true enemy was Lord Voldemort
;
Timeline between Harry Potter and the Prisoner of Azkaban and post-Percy Jackson and the Sea of Monsters. I have not determined the exact time of the Christian era. Please don't pay attention. lol
P.S. English is not my first language, I apologize for that.
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All Poetry We Ever Read/ Is But True Dreams Interpreted by jane5r
Fandoms: Harry Potter - J. K. Rowling, Percy Jackson and the Olympians & Related Fandoms - All Media Types
03 May 2024
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Summary
When Annabeth had found the president of the MACUSA waiting outside of her physics classroom, she had known it was going to be a bad day.
In which, at the request of Este Picquery, Annabeth Chase and Percy Jackson go to Hogwarts.
(Set after ToA & during OoTP). I haven't read The Sun & The Star yet (I will soon), but I'll try to avoid spoilers.
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Demigod in world of magic by Commander_Jackson (orphan_account)
Fandoms: Percy Jackson and the Olympians & Related Fandoms - All Media Types, Harry Potter - J. K. Rowling
26 Apr 2024
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Summary
A dragon's word leads Percy into his next adventure in the world of Magic. Just as the Dark lord plans to rise. Set after HOO and during GOF
More tags to add later -
Through the years by Witch_4_life
Fandoms: Harry Potter - J. K. Rowling, Percy Jackson and the Olympians & Related Fandoms - All Media Types, Percy Jackson and the Olympians - Rick Riordan
10 Apr 2024
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Harry has met many strange people throughout his life. Giants, goblins, centaurs, but none are as strange as Percy Jackson. Don’t get him wrong, Percy is not the bad kind of strange... but as Harry would put it; he is an odd individual. However, more than that he is one of the kindest, most loyal and maybe even funniest people Harry's ever met. Harry considers him one of his best friends. Actually, looking back, Percy was one of the first friends Harry made at Hogwarts.
[While spending his summers at camp, Percy actually spends the rest of his year going to school at Hogwarts.]
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ABANDONED Collision Course by Female_SeawedBrain
Fandoms: Percy Jackson and the Olympians - Rick Riordan, Percy Jackson and the Olympians & Related Fandoms - All Media Types, Harry Potter - J. K. Rowling
17 Feb 2024
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Summary
Percy and Annabeth had finally escaped Tartarus and the Doors of Death but instead of being met by their friends open arms, or even a god or a hideous monster, they were met by a huge room filled with a bunch of kids who's ages ranged from about eleven to seventeen. Soon after seeing this, they both passed out not knowing that they were in Hogwarts, School of Witchcraft and Wizardry.
This work is ABANDONED
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Lost Lottery (DISCONTINUED) by aj-tonightat5 (TheRainWillCome)
Fandoms: Percy Jackson and the Olympians - Rick Riordan, Harry Potter - J. K. Rowling
14 Feb 2024
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Summary
A boy destined for greatness is the same boy leading a double life. Perseus Jackson, a boy who wanted to be normal, but lost the lottery and turned out to be a prominent figure in both worlds—magical and greek. Torn between responsibilities, he learns to delegate his life.
Turned into OC story; The Sun King
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The New Gamekeeper by SubparAuthor
Fandoms: Percy Jackson and the Olympians & Related Fandoms - All Media Types, Harry Potter - J. K. Rowling, Percy Jackson and the Olympians - Rick Riordan
15 Dec 2023
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Summary
Harry had just seen Cedric perish by the Dark Lord's hand. Back at his 'relatives' house, he gets a house call from the Order of the Phoenix. Who is this new order member, one slightly older than him and an American accent to boot?
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Its a Child! Surprise! by Verbis_auditis_lacrimo
Fandoms: Harry Potter - J. K. Rowling, Percy Jackson and the Olympians & Related Fandoms - All Media Types
12 Oct 2023
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Summary
In the Wizarding world sometimes especially skilled wizards are surprised with gifts, by strangers, of Children of fantastical ability. Some are clever and have grey eyes, sometimes they are the quickest duelers in the country and have elfin, mischievous features.
Or sometimes, in the case of Sirius Black and Remus Lupin, they share features of a man they both felt a connection with. And who can control water as easy as breathing.
Series
- Part 1 of Old Camp Hogwarts